5 adjustable metal eyelets keep the genuine leather dog collar at the correct size. Strong and durable high quality PU leather (artificial leather). Lightweight, stylish and not rigid. Galvanized alloy hardware accessories, no fading, good tension, high quality. The D-ring made of high quality alloy, it can be attached to dog leashes when walking, exercising and traveling outdoors. Note: Please measure your dog’s neck circumference with a soft tape measure before order.